CN101296205A - Method, equipment and system for implementing transparent transmission in IP network or hybrid network - Google Patents
Method, equipment and system for implementing transparent transmission in IP network or hybrid network Download PDFInfo
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- CN101296205A CN101296205A CNA2007101027603A CN200710102760A CN101296205A CN 101296205 A CN101296205 A CN 101296205A CN A2007101027603 A CNA2007101027603 A CN A2007101027603A CN 200710102760 A CN200710102760 A CN 200710102760A CN 101296205 A CN101296205 A CN 101296205A
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Abstract
The invention relates to a method, equipment and a system for realizing transparent transmission in an IP network or a mixed network. The method comprises the steps that: in the IP network, the network equipment adopts information sent by an information sending end and by using a transparent transmission way based on IP after receiving the information sent in the transparent transmission way; in the mixed network comprising the IP network and a TDM network, the network equipment connected between the IP network and the TDM network receives the information needing transparent transmission; the received information is subjected to conversion process between the transparent transmission way based on the IP and the transparent transmission way based on the TDM, and the information after being processed is transmitted. Therefore, in the invention, the information is directly transmitted without paying attention to the content of the transmitted information, thereby ensuring that the information, such as secure voice to be sent, etc., is not damaged. The realization of the embodiment of the invention causes the transparent transmission of service information from point to point to be realized in the IP network or the mixed network comprising the IP network.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the technology that realizes transparent transmission in a kind of network.
Background technology
In communication system, there are some particular services end to end, as circuit data service, end-to-end encrypted word business etc., these business all are that two square ends transmit to client information, intermediate conveyor equipment can not carry out any modification to its content, otherwise may cause end-to-end communication information destroyed, can't communicate.
In traditional core network based on TDM (time division multiplexing), owing to be the transmission of carrying out data by the circuit switching of physics specifically, therefore, it can realize transparent data transmission.
Along with networks development, core net has promptly engendered the application scenarios of IP networking and IP and TDM mixed networking also progressively to evolution of future generation.
In IP network, owing to adopted various compression coding and decoding technology, thereby cause network no longer transparent to information transmitted.That is to say that in the data transmission procedure of IP based network, network need be realized the conversion of various encoding and decoding.Like this, for business such as end-to-end encrypted words, because its information transmitted is through encryption, make codec to discern, handle if this class business information is carried out encoding and decoding conversion, then will destroy corresponding enciphered message, cause the opposite end to be correctly decoded.
Therefore, under the application scenarios of IP networking or IP and TDM mixed networking, can't realize the transparent transmission of teleservice information at present.
Summary of the invention
Embodiments of the invention provide a kind of method, equipment and system that realizes transparent transmission in IP network or hybrid network, thereby make the transparent transmission that can realize teleservice information in IP based network.
The embodiment of the invention provides the method that realizes transparent transmission in a kind of hybrid network, comprising:
In the hybrid network that comprises IP network and time division multiplexing tdm network, the network equipment that is connected between IP network and the TDM network receives the information that needs transparent transmission;
The described information of receiving is carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information after the transmission conversion process.
The embodiment of the invention provides a kind of network equipment, and this network equipment is connected between IP network and the TDM network, and specifically comprises:
Information receiving unit is used to receive the information that needs transparent transmission;
Transparent transmission mode conversion processing unit, the information that is used for that described information receiving unit is received carry out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM;
Information transmitting unit is used to transmit the information by after the described transparent transmission mode conversion processing unit conversion process.
The embodiment of the invention provides the system that realizes transparent transmission in a kind of hybrid network, and this system is arranged in the hybrid network that comprises IP network and TDM network, and specifically comprises:
At least one first network equipment is arranged in TDM network or the IP network, is used to adopt the transparent transmission mode to carry out transmission of Information;
At least one second network equipment, be connected between IP network and the TDM network, be used for the information that needs transparent transmission that described first network equipment or other second network equipments send, and the described information of receiving carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information after the transmission conversion process.
The embodiment of the invention provides and has realized the method that transparent transmission detects in a kind of hybrid network, this hybrid network comprises IP network and TDM network, in the TDM network, adopts and carry out transmission of Information as the transparent transmission mode, and the process that transparent transmission detects specifically comprises based on the transmission means of ISLP:
The network equipment that is connected between IP network and the TDM network receives the information that the TDM network is sent;
One group of continuous information frame that inspection receives if determine to comprise in this group of continuous information frame the 0x7E filling symbol of predetermined quantity, then confirms to detect the ISLP frame.
The embodiment of the invention provides a kind of method that realizes transparent transmission in IP network, comprising:
In the IP bearer network, set up bearer path end to end;
Described bearer path via media gateway and/or radio reception device, receive to need adopt transparent transmission mode information transmitted after, adopt IP-based transparent transmission mode in the IP bearer network, to transmit the described information that receives.
The embodiment of the invention provides a kind of network equipment, is media gateway or radio reception device, and this network equipment comprises:
Information receiving unit is used for receiving needs and adopts transparent transmission mode information transmitted;
The transparent transmission processing unit is used for adopting IP-based transparent transmission mode to handle the described information that described information receiving unit receives;
Information transmitting unit is used to send the information after the described transparent transmission processing unit processes.
The embodiment of the invention provides a kind of control appliance, comprising:
Transparent transmission mode determining unit is used for determining needs execution transparent transmission mode according to the message that the network equipment of receiving is sent;
The second transparent transmission mode notification unit, be used for after the transparent transmission mode determines that needs are carried out the transparent transmission mode, in message transmitting procedure via the network equipment send notice, to indicate the described network equipment after reception needs to adopt transparent transmission mode information transmitted, adopt IP-based transparent transmission mode to transmit the described information that receives.
The technical scheme that is provided by the embodiment of the invention described above as can be seen, because the equipment in the IP network, perhaps the equipment in the hybrid network of IP network and TDM network composition can know that it need adopt the transparent transmission mode to carry out the information transmission, and can switch to corresponding transparent transmission state as required, thereby make in IP network, perhaps in the hybrid network that IP network and TDM network are formed, all can be implemented in and still can carry out transmission of Information after loading end switches under the transparent transmission mode, promptly can realize the transparent transmission of teleservice information.
Description of drawings
Fig. 1 is the concrete application implementation procedure schematic diagram one of the embodiment of the invention in hybrid network;
Fig. 2 is the concrete application implementation procedure schematic diagram two of the embodiment of the invention in hybrid network;
Fig. 3 is the processing procedure schematic diagram that transmits the transparent transmission indication in the embodiment of the invention between the MSC;
Fig. 4 is the concrete application implementation procedure schematic diagram three of the embodiment of the invention in hybrid network;
Fig. 5 is the concrete application implementation procedure schematic diagram four of the embodiment of the invention in hybrid network
Fig. 6 is the APP message format schematic diagram after the expansion in the embodiment of the invention;
Fig. 7 is an IP-based network networking structure schematic diagram in the embodiment of the invention;
Fig. 8 is the message format schematic diagram of expansion event argument in the embodiment of the invention;
The hybrid network system that Fig. 9 provides for the embodiment of the invention and the structural representation of equipment;
Figure 10 is the concrete application implementation procedure schematic diagram one of the embodiment of the invention in IP network;
Figure 11 A and Figure 11 B are the concrete application implementation procedure schematic diagram two of the embodiment of the invention in IP network;
Figure 12 is the concrete application implementation procedure schematic diagram three of the embodiment of the invention in IP network;
The device structure schematic diagram that Figure 13 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides the technical scheme that realizes transparent transmission in IP-based network, in this scheme, comprise: in IP network, being responsible for carrying out information transmission processing equipment receives after employing transparent transmission mode that other equipment send carries out the indication of transmission of Information, adopt the transparent transmission mode to send the information that information transmitting terminal is sent, promptly need not to pay close attention to the content of information transmitted, described information is not carried out encoding and decoding and handle the described information of directly transmitting, thereby make information such as secure service to be sent can not be damaged.
More specifically say, in the specific embodiment, realize that in hybrid network the process of transparent transmission mainly comprises: at first, in the hybrid network that comprises IP network and TDM (time division multiplexing) network, set up the bearer path between information transmitting terminal and the information receiving end; Afterwards, described bearer path via be connected in the network equipment between IP network and the TDM network receive need the information of transparent transmission after, the described information of receiving is carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM; At last, the information after the transmission conversion process.
In embodiments of the present invention, described bearer path via be connected on the network equipment between IP network and the TDM network, need definite current employing transparent transmission mode that needs carry out the information transmission, corresponding need to determine to adopt mode that the transparent transmission mode information of carrying out transmits can for: receive the message that other equipment on the described bearer path or control appliance send at the described network equipment, and comprise the transparent transmission indication in the described message, then determining needs to adopt the transparent transmission mode to carry out the transmission of information, perhaps, after the described network equipment detects and identifies the information of sending by the transparent transmission mode, determine that then this network equipment need adopt the transparent transmission mode to carry out transmission of Information; Perhaps, after the network equipment detects and identifies the information of sending by the transparent transmission mode, can also determine whether to allow to adopt the transparent transmission mode to the control appliance request,, determine that then this network equipment need adopt the transparent transmission mode to carry out transmission of Information if control appliance allows.
Wherein, the described control appliance processing procedure that sends the message that comprises the transparent transmission indication specifically can comprise following any mode:
Mode one: control appliance receives the transparent transmission indication that needs that other equipment send switch to the transparent transmission mode, can determine that then current needs adopt the transparent transmission mode carry out the information transmission, for example, MSC (mobile switching centre) as control appliance receives the message that access device BSC (base station controller) sends, indication need switch to the transparent transmission mode in the message, or the like;
Mode two: control appliance determine to allow adopts the transparent transmission mode in setting up voice channel (being bearer path) process, and then can determine currently needs to adopt the transparent transmission mode carry out the information transmission.
And, described control appliance sends the message that comprises the transparent transmission indication and is specifically as follows: the code/decode type that the transparent transmission mode is set in the message of message that increases end points or modification end points is indicated as described transparent transmission, and send described message, so that notify other network equipments with described transparent transmission indication.
In the embodiment of the invention, the network equipment detect identify the information of sending by the transparent transmission mode specific implementation can for:
The network equipment receives the information that other equipment on the bearer path are sent; If the code/decode type of the information of sending is the transparent transmission mode, perhaps, determine that according to the form or the content of the information that receives described information sends for adopting the transparent transmission mode, then determines to detect the information of sending by the transparent transmission mode that identifies.
In embodiments of the present invention, the concrete transparent transmission mode that is based on IP that adopts is carried out the transparent transmission of information in IP network, the mode that other equipment on the described bearer path are sent information includes but not limited to be the message of expansion TrFO (encoderless operation), perhaps, the message of expansion RTCP (RTCP Real-time Transport Control Protocol), perhaps, expansion RFC 2833 (RFC, Request for Comment) message of standard, perhaps, the message of expansion TFO is (as the expansion coding and decoding type: the transparent transmission mode), so that by the corresponding transparent transmission indication of each message bearing after the expansion, indication is carried out corresponding transparent transmission mode and is carried out message transmission, thereby realizes the negotiations process of transparent transmission mode;
And, in the embodiment of the invention, then can adopt the transparent transmission mode based on TDM in the TDM network, described transparent transmission mode based on TDM includes but not limited to be the transmission means of ISLP (link protocol between system) transmission means or TFO (no tandem operation).
Technical scheme by the invention described above embodiment provides can realize transparent transmission end to end in IP-based network.Therefore, the realization of the embodiment of the invention can guarantee in IP network or IP and TDM mixed networking situation under still can provide transparent transmission channel, with the transparent transmission of the information of carrying out.
For ease of understanding to the embodiment of the invention, below will be with in IP and TDM hybrid network, adopting ISLP (link protocol between system) frame to carry out transparent transmission in the TDM network is example, and the concrete Application Example of the embodiment of the invention is elaborated.
In this Application Example, MGW can notify MSCe (mobile soft switch center) after loading end detects voice and cuts transparent transmission indication, indicate described MGW to switch under the transparent transmission mode by MSCe again.After eating dishes without rice or wine to switch to the transparent transmission mode, BSC can pass through out-of-band signalling (as switching message) notice MSCe, also can notify MSCe by other modes.
Application Example one in the hybrid network
In IP and TDM hybrid network, corresponding information transmission processing process specifically may further comprise the steps as shown in Figure 1:
This MSCe1 is after the described code/decode type UDTD of media gateway MGW 1 transmission is as the transparent transmission indication, MGW1 can determine to adopt the transparent transmission mode to carry out message transmission according to this transparent transmission indication, comprises according to this transparent transmission indication and determines then to carry out the transparent transmission mode when meeting predetermined condition (as detecting transparent transmission frame etc.);
MSCe1 also comprises UDTD in the parameter of the assignment message carrying that IP-based BSC sends, so that IP-based BSC can carry out transparent transmission according to this UDTD;
To the processing of step 3, set up the voice channel between information transmitting terminal and the information receiving end through above-mentioned steps 1, afterwards, as follows with utilizing described voice channel to carry out the process of message breath transmission:
Step 4, between IP-based BSC and the MGW1, and MGW2 all adopts EVRC (Enhanced Variable RateCodec, the encoding and decoding of enhancing variable bit rate) bearing mode of encoding and decoding, be that EVRC PT (code/decode type is EVRC) carries out the transmission of voice, between MGW1 and MGW2, adopt and carry out voice delivery based on the G7.11 mode of TDM;
Be specifically as follows: after entering two square tubes words, use the EVRC mode to communicate by letter on the IP-based voice channel of setting up, use TDM G.711 to transmit on the TDM passage, described MGW1 realizes ip voice encoding and decoding and the G.711 conversion of encoding and decoding of TDM;
Step 5, the information that is determined to the current speech channel transfer on the IP-based BSC of information transmitting terminal switches to the transparent transmission mode;
Be specifically as follows by information transmitting terminal (as subscriber terminal equipment etc.) and initiate the switching of voice to transparent transmission, IP-based BSC and information transmitting terminal are carried out service negotiation, after consulting successfully, determine that current needs switch to the transparent transmission mode, be that information transmitting terminal uses the UDTD mode to communicate by letter with MGW1, the expression code/decode type is UDTD in the communication process;
Step 6 adopts the transparent transmission mode to carry out information interaction between IP-based BSC and the MGW1;
By IP-based BSC after the process that MGW1 transmits information can be received the information that needs transparent transmission that information transmitting terminal sends (as the voice after encrypting etc.) for: IP-based BSC, adopt the UDTD mode to transmit described information, promptly the code/decode type of the information of Chuan Diing is UDTD;
By MGW1 to the process that IP-based BSC transmits information can determine for: MGW1 one side vertex type be TDM opposite side endpoint type be IP and comprise UDTD after, start the detection of ISLP frame, receiving and behind the ISLP frame that IP-based BSC sends, to adopt the UDTD mode that described ISLP frame loaded information is passed to IP-based BSC;
In this step, the implementation that corresponding ISLP frame detects can for: according to ISLP frame feature as can be known, in an ISLP frame, there are a large amount of 0x7E filling symbols (as 50), when in being consecutively detected a plurality of frames (as 2), all having the 0x7E symbol in a large number, then can confirm to detect the ISLP frame;
Step 7 adopts the transparent transmission mode to carry out information interaction between MGW1 and the MGW2;
Be specifically as follows: after MGW1 and the MGW2 reception information, be UDTD, then switch to the transparent transmission mode, promptly adopt the ISLP frame to carry out information interaction if detect the code/decode type of information;
Step 8, MGW2 adopts the transparent transmission mode that the information of receiving is sent to information receiving end, and receives the information that needs transparent transmission that information receiving end returns;
MGW2 to the process that information receiving end sends information can find for: MGW2 the side vertex type of self be TDM opposite side endpoint type be IP and comprise UDTD after, start the detection of ISLP frame, and will detect the ISLP frame and adopt transparent transmission mode (being UDTD) to send to information receiving end, be after MGW2 detects for the ISLP frame but not the G.711 frame that TDM goes up transmission, then determine the switching of voice to transparent transmission takes place, on IP tunnel, transmit the UDTD frame and separate type of coding UDTD;
MGW2 receives the process that needs transparent transmission that information receiving end returns to information transmitting terminal and is specifically as follows: if the information that MGW2 receives is that the mode of UDTD is transmitted for adopting code/decode type, then need described informational needs to adopt the transparent transmission mode to transmit.
In above-mentioned processing procedure, because it is TDM that the two side ends vertex type of MGW1 and MGW2 is respectively a side vertex type, the opposite side endpoint type is the IP based on transparent transmission, therefore, described MGW1 and MGW2 need realize IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode (as being transmission means of ISLP frame etc.) of TDM.
But, in above-mentioned processing procedure, if MGW1, perhaps MGW2, perhaps the end points of the two side ends of the equipment such as other MGW between MGW1 and the MGW2 is IP or TDM, is that information or the ISLP frame of UDTD transmitted to the code/decode type of receiving directly then, and need not to handle.
Application Example two in the hybrid network
In IP and TDM hybrid network, corresponding information transmission processing process specifically may further comprise the steps as shown in Figure 2:
Be specifically as follows: MSCe2 finds that it is adjacent with the IP end points when setting up TDM termination, and allows transparent transmission, then comprises ISLP in the ADD order that sends to MGW2 and detects indication, and MGW2 carries out the ISLP detecting operation with indication; In this step, also can adopt other orders or message to transmit described ISLP and detect indication to MGW2;
At this moment, not carrying out transparent transmission as yet handles, concrete voice messaging transmittance process can for: adopt the EVRC code encoding/decoding mode to carry out voice delivery between IP-based BSC and the MGW1, between MGW1 and MGW2, adopt and carry out the transmission of voice, adopt the EVRC code encoding/decoding mode to carry out voice delivery between MGW2 and the information receiving end based on the G.711 standard of TDM;
Be specifically as follows by information transmitting terminal (as subscriber terminal equipment etc.) and initiate the switching of voice to transparent transmission, IP-based BSC and information transmitting terminal are carried out service negotiation, after consulting successfully, determine that current needs switch to the transparent transmission mode, be that information transmitting terminal uses the UDTD mode to communicate by letter with MGW1, the expression code/decode type is UDTD in the communication process;
Step 4, IP-based BSC sends the bearer update request to MGW1, and request MSCe1 carries out the renewal operation of code/decode type;
Step 5, after MSCe1 received described request, the code/decode type that upgrades connected MGW1 was UDTD, and started the detection of ISLP frame, also upgraded the code/decode type of IP-based BSC;
Specifically can carry out the change of code/decode type, perhaps, also can carry out the modification of code/decode type by other orders or message by MOD (modification) message;
Step 6 adopts the UDTD mode to carry out the transmission of voice messaging between IP-based BSC and the MGW1, the code/decode type in the transmission course is labeled as UDTD;
By IP-based BSC after the process that MGW1 transmits information can be received the information that needs transparent transmission that information transmitting terminal sends (as the voice after encrypting etc.) for: IP-based BSC, adopt the UDTD mode to transmit described information, promptly the code/decode type of the information of Chuan Diing is UDTD;
By MGW1 to the process that IP-based BSC transmits information can determine for: MGW1 one side vertex type be TDM opposite side endpoint type be IP and comprise UDTD after, start the detection of ISLP frame, receiving and behind the ISLP frame that IP-based BSC sends, to adopt the UDTD mode that described ISLP frame loaded information is passed to IP-based BSC;
In this step, the implementation that corresponding ISLP frame detects can for: according to ISLP frame feature as can be known, in an ISLP frame, there are a large amount of 0x7E filling symbols (as 50), when in being consecutively detected a plurality of frames (as 2), all having the 0x7E symbol in a large number, then can confirm to detect the ISLP frame;
Step 7 adopts the transparent transmission mode to carry out information interaction between MGW1 and the MGW2;
Be specifically as follows: after MGW1 and the MGW2 reception information, be UDTD, then switch to the transparent transmission mode, promptly adopt the ISLP frame to carry out information interaction if detect the code/decode type of information;
Step 8, MGW2 adopts the transparent transmission mode that the information of receiving is sent to information receiving end, and receives the information that needs transparent transmission that information receiving end returns;
In this step, behind the ISLP frame that the MGW2 primary detection is sent to MGW1, be that MGW2 detects for the ISLP frame but not the G.711 frame that TDM goes up transmission, then determine to take place the switching of voice to transparent transmission, need be with ISLP event notice MSCe2, after MSCe2 receives described notice (promptly switching to the notice of transparent transmission mode), MGW2 the code/decode type of MGW2 in IP network is revised as UDTD, so that can adopt the UDTD mode that the ISLP frame that receives is sent to the information receiving end that is in the IP network;
In this step, also comprise: MGW2 receives the process that needs transparent transmission that information receiving end returns to information transmitting terminal, if the information that receives of MGW2 is that the mode of UDTD is transmitted for adopting code/decode type, then need described informational needs to adopt the transparent transmission mode to pass to MGW1.
In above-mentioned processing procedure, because it is TDM that the two side ends vertex type of MGW1 and MGW2 is respectively a side vertex type, the opposite side endpoint type is the IP based on transparent transmission, therefore, described MGW1 and MGW2 need realize IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode (as being transmission means of ISLP frame etc.) of TDM.
But, in above-mentioned processing procedure, if MGW1, perhaps MGW2, perhaps the end points of the two side ends of the equipment such as other MGW between MGW1 and the MGW2 is IP or TDM, is that information or the ISLP frame of UDTD transmitted to the code/decode type of receiving directly then, and need not to handle.
In above-mentioned processing procedure, if need carry out the interoffice IP transmission, then can the transparent transmission mode take place by order notice opposite ends such as SIP signalings between MSCe and the MSCe; For example, in above-mentioned processing procedure shown in Figure 2, if MGW2 also needs to continue to adopt the transparent transmission mode to carry out the mutual of information with MGW3, then as shown in Figure 3, corresponding processing procedure comprises:
Specifically can pass through SIP INVITE (session initiation protocol invitation) message informing MSCe3;
In addition, need to prove, in above-mentioned two concrete Application Examples, also can BSC and MGW find according to the code/decode type that receives current switch to the transparent transmission pattern after, automatically switch to the transparent transmission state, carry out message transmission to adopt the transparent transmission mode.
Application Example three in the hybrid network
As shown in Figure 4, in this embodiment, be to initiate business end to end by BSC based on TDM, at this moment, corresponding processing procedure specifically may further comprise the steps:
Step 4, MSCe1 also carries out information interaction with MSCe2, after described MSCe2 determines to allow to carry out transparent transmission, then in the information of transmitting to MGW2, carry described UDTD, is that the information of UDTD adopts the transparent transmission mode to transmit with notice MGW2 to the code/decode type of receiving, and detects whether the information that MGW1 sends is the ISLP frame;
Be specifically as follows, MSCe1 needs to adopt the transparent transmission mode carry out transmission of Information by the sip message notice MSCe2 of the code/decode type that carries UDTD after expanding so that MSCe2 is known.
To the processing of step 4, and after setting up voice channel between information transmitting terminal and the information receiving end, also will utilize described voice channel to carry out the transmission of voice messaging through above-mentioned steps 1, still with reference to shown in Figure 4, corresponding processing procedure may further comprise the steps:
Step 5, between the BSC and MGW1 based on TDM, and MGW2 all adopts based on the G7.11 mode of TDM and carries out voice transfer, promptly carries out the transmission of unencryped word, adopts EVRC PT to carry out the transmission of voice between MGW1 and MGW2;
Step 6, the information that is determined to the current speech channel transfer on the BSC based on TDM of information transmitting terminal switches to the transparent transmission mode, promptly determines need begin to carry out the transmission of encrypted word;
Be specifically as follows: initiate the switching of voice by information transmitting terminal (as subscriber terminal equipment etc.), carry out service negotiation based on BSC and the information transmitting terminal of TDM to transparent transmission, consult successfully after, determine that current needs switch to the transparent transmission mode;
Step 7, based on adopting the transparent transmission mode to carry out information interaction between the BSC of TDM and the MGW1, promptly the BSC based on TDM adopts the ISLP mode to communicate by letter with MGW1;
By based on the BSC of TDM to MGW1 transmit information process can for: receive the information that needs transparent transmission that information transmitting terminal sends (as the voice after encrypting etc.) based on the BSC of TDM after, adopt the ISLP frame to transmit described information;
By MGW1 to the process that transmits information based on the BSC of TDM can for: MGW1 determines that one side vertex type is IP and comprises UDTD, the opposite side endpoint type is TDM, then receiving in the message that sends based on the BSC of TDM, to comprise UDTD the time, adopting the ISLP frame to carry described message the message of receiving and be transferred to BSC based on TDM;
Step 8 adopts between MGW1 and the MGW2 and carries out information interaction based on the transparent transmission mode of EP, and promptly adopting code/decode type is that the transparent transmission mode of UDTD is carried out information interaction between MGW1 and MGW2;
Step 9, it is that the information of UDTD sends to information receiving end with the code/decode type of receiving that MGW2 adopts based on the transparent transmission mode of TDM, and receive that information receiving end returns need be based on adopting the UDTD code/decode type carry out the information of transparent transmission;
MGW2 to information receiving end send information process can for: MGW2 receives and adopts code/decode type UDTD mode signal transmitted, then adopts based on the transparent transmission mode of TDM and transmits;
The process that needs transparent transmission that MGW2 reception information receiving end returns to information transmitting terminal is specifically as follows: be IP and comprise UDTD if MGW2 finds the side vertex type of self, the opposite side endpoint type is TDM, then will start the detection of ISLP frame, and will detect the ISLP frame and adopt transparent transmission mode (being UDTD) to send to MGW1, be after MGW2 detects for the ISLP frame but not the G.711 frame that TDM goes up transmission, then determine the switching of voice to transparent transmission takes place, on IP tunnel, transmit the UDTD frame and separate type of coding UDTD;
In above-mentioned processing procedure, because it is TDM that the two side ends vertex type of MGW1 and MGW2 is respectively a side vertex type, the opposite side endpoint type is the IP based on transparent transmission, therefore, described MGW1 and MGW2 need realize IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode (as being transmission means of ISLP frame etc.) of TDM.
But, in above-mentioned processing procedure, if MGW1, perhaps MGW2, perhaps the end points of the two side ends of the equipment such as other MGW between MGW1 and the MGW2 is IP or TDM, is that information or the ISLP frame of UDTD transmitted to the code/decode type of receiving directly then, and need not to handle.
Application Example four in the hybrid network
As shown in Figure 5, in this embodiment, be to initiate business end to end by BSC based on TDM, suppose that an end that connects based on the BSC of TDM is an information transmitting terminal, an end that is connected with MGW2 is an information receiving end, and at this moment, corresponding processing procedure specifically may further comprise the steps:
For example, can detect indication, carry out the ISLP detecting operation with indication MGW1 or MGW2 by comprising ISLP in the ADD order that sends; In this step, also can adopt other orders or message to transmit described ISLP and detect indication to MGW2;
At this moment, not carrying out transparent transmission as yet handles, concrete voice messaging transmittance process can for: carry out the transmission of voice based on adopting between the BSC of TDM and the MGW1 based on the G.711 standard of TDM, between MGW1 and MGW2, adopt the EVRC code encoding/decoding mode to carry out voice delivery, adopt between MGW2 and the information receiving end and carry out the transmission of voice based on the G.711 standard of TDM;
Be specifically as follows by information transmitting terminal (as subscriber terminal equipment etc.) and initiate the switching of voice to transparent transmission, BSC and information transmitting terminal based on TDM are carried out service negotiation, after consulting successfully, determine that current needs switch to the transparent transmission mode, promptly information transmitting terminal is communicated by letter with MGW1 based on ISLP;
Step 4 is based on adopting the ISLP frame to carry out information interaction between the BSC of TDM and the MGW1;
Step 5 after MGW1 receives described ISLP frame and identifies this ISLP frame, sends the notice that detects the ISLP incident to MSCe1;
Step 6, after MSCe1 received the notice of described ISLP incident, the code/decode type that upgrades connected MGW1 was UDTD;
Specifically can carry out the change of code/decode type, perhaps, also can carry out the modification of code/decode type by other orders or message by MOD (modification) message;
Step 7 adopts IP-based transparent transmission mode to carry out information interaction between MGW1 and the MGW2;
Be specifically as follows: after MGW1 and the MGW2 reception information, receive that information is the ISLP frame if detect, then adopting code/decode type is that the transparent transmission mode of UDTD is carried out transmission of Information;
Step 8, MGW2 adopts the transparent transmission mode (as the ISLP frame) based on TDM that the information of receiving is sent to information receiving end, and receives the ISLP frame that needs transparent transmission that information receiving end returns.
In above-mentioned processing procedure, because it is TDM that the two side ends vertex type of MGW1 and MGW2 is respectively a side vertex type, the opposite side endpoint type is the IP based on transparent transmission, therefore, described MGW1 and MGW2 need realize IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode (as being transmission means of ISLP frame etc.) of TDM.
But, in above-mentioned processing procedure, if MGW1, perhaps MGW2, perhaps the end points of the two side ends of the equipment such as other MGW between MGW1 and the MGW2 is IP or TDM, is that information or the ISLP frame of UDTD transmitted to the code/decode type of receiving directly then, and need not to handle.
Remove above-mentioned two concrete application implementation exceptions, the embodiment of the invention also can be expanded RTCP and TFO technology in concrete application process, with under IP and TDM mixed networking situation, provide transparent transmission channel by loading end control, guarantees the integrality of data.
To the concrete Application Example based on expansion RTCP and TFO technology be described below.
In this Application Example, can be to the APP (RTCP of application of RTCP (RTCP Real-time Transport Control Protocol), being used to represent the expansion of application oriented function) message expands, with the transparent transmission sign of the transparent transmission mode correspondence of carrying redetermination, each equipment in the IP network of making can know that the transparent transmission mode of current employing carries out information transmission processing.
Described APP message format after the expanded definition as shown in Figure 6, in Fig. 6, only define new subtype subtype (as 0x01) and title name (as 1234) expression bearing mode and get final product, and the part of application-dependent data (request msg) wherein can be omitted for the transparent transmission mode.
Describe below in conjunction with the specific implementation process of accompanying drawing to this Application Example, as shown in Figure 7, corresponding processing procedure may further comprise the steps:
The first step, set up voice channel between BSC1 and the BSC2 after, BSC1 side generation unencryped word promptly switches to the transmission that the transparent transmission mode is carried out voice messaging to the switching of encrypted word;
In second step, BSC1 sends the RTCP control messages by the RTCP control protocol of above-mentioned expansion to MGW1, need enter the transparent transmission mode with indication;
In the 3rd step, MGW1 enters under the transparent transmission mode after receiving the transparent transmission indication, when MGW1 finds to be adjacent end points for the MGW2 based on the TDM technology, then starts the TFO negotiations process by MGW1 on the TDM passage;
In the 4th step, PSTN (traditional telephone network) both sides get final product so only carry out circuit switching owing to be the TDM circuit all, and need not to handle the content of transmission;
The 5th step, MGW2 receives that the TFO that MGW1 sends consults indication, and find that the opposite end code encoding/decoding mode is the transparent transmission mode, then revise local IP side point and enter the transparent transmission state, and startup TFO negotiations process, passage enters the TFO state between MGW1 and the MGW2, promptly can carry out the transparent transmission of information between MGW1 and MGW2;
In the 6th step, MGW2 also continues to send the RTCP control messages to MGW3 by above-mentioned expansion RTCP control protocol, enters with indication MGW3 and carries out message transmission under the transparent transmission mode;
In the 7th step, MGW3 then enters the transparent transmission state after receiving the described indication that enters transparent transmission, when finding that being adjacent end points is the BSC2 based on the TDM technology, then starts the TFO negotiations process on the TDM passage;
In the 8th step, BSC2 receives that the TFO that MGW3 sends consults indication, and finds that the opposite end code encoding/decoding mode is the transparent transmission mode, then revises its IP side point and enters the transparent transmission state, and start the TFO negotiations process, and passage enters the TFO state between BSC2 and the MGW3;
In the 9th step, after BSC2 finished aforesaid operations, it eated dishes without rice or wine to switch to encrypted word by unencryped word, promptly switched under the transparent transmission mode.
So far, information transmitting terminal and information receiving end both sides can enter the encrypted word talking state, the transmission of the information after promptly can adopting the mode of transparent transmission in IP and TDM hybrid network, to encrypt, thus can in IP and TDM hybrid network, provide professional end to end reliably for the user.
In IP network, also can indicate incident under the transparent transmission mode that switches by the mode that defines new event type.For example, as shown in Figure 8, the Event (incident) of a byte of expanded definition with switch incident under the transparent transmission mode of expression, like this, just can carry out the handover operation of transparent transmission mode by the event notice opposite end of this expanded definition.
The embodiment of the invention also provides a kind of system that realizes transparent transmission in hybrid network, and this system is arranged in the hybrid network that comprises IP network and TDM network, and its specific implementation structure specifically can comprise following equipment as shown in Figure 9:
(1) at least one first network equipment is arranged in TDM network or the IP network, is used to adopt the transparent transmission mode to carry out transmission of Information;
Wherein, if first network equipment is arranged in the TDM network, then be used to adopt transparent transmission mode (as ISLP mode, TFO mode etc.) to carry out transmission of Information based on TDM; If first network equipment is arranged in the IP network, then be used to adopt IP-based transparent transmission mode (as RTCP mode, TrFO mode or RFC 2833 modes etc.) to carry out transmission of Information;
(2) at least one second network equipment, it is connected between IP network and the TDM network, be used for the information that needs transparent transmission that described first network equipment or other second network equipments send, and the described information of receiving carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information after the transmission conversion process.
Described second network equipment specifically can comprise following processing unit:
(1) information receiving unit is used to receive the information that needs transparent transmission, for example, can receive the information that IP-based transparent transmission mode is sent, and perhaps, also can receive the information of sending based on the transparent transmission mode of TDM;
(2) transparent transmission mode conversion processing unit, the information that is used for that described information receiving unit is received is carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information translation that the IP-based transparent transmission mode that is about to receive is sent sends for the transparent transmission mode based on TDM, perhaps, the information translation that the transparent transmission mode based on TDM that receives is sent is that IP-based transparent transmission mode sends;
(3) information transmitting unit is used to transmit the information by after the described transparent transmission mode conversion processing unit conversion process, to realize the transparent transmission of the information in the hybrid network.
Alternatively, can also comprise following arbitrary unit at described second network equipment:
(1) first transparent transmission determining unit is used for reception and obtains the transparent transmission indication, determines that according to described transparent transmission indication these network equipment needs adopt transparent transmission mode to carry out transmission of Information;
Wherein, the described first transparent transmission determining unit and other devices communicatings that are used on the bearer path of message transmission are used to obtain the message that comprises the transparent transmission indication; Perhaps, the described first transparent transmission determining unit is communicated by letter with control appliance, is used to obtain the message that comprises the transparent transmission indication.
Need to prove, in described control appliance, specifically can comprise:
The transmission means determining unit, be used to receive described bearer path via the needs sent of equipment switch to the indication of transparent transmission mode; Perhaps, in setting up the voice channel process, determine to allow to adopt the transparent transmission mode, then determine to need to adopt the transparent transmission mode;
Transparent transmission Indication message transmitting element, the code/decode type that is used for being provided with in the message that increases end points or the message of revising end points the transparent transmission mode indicate as described transparent transmission, and sends the described message that transparent transmission is indicated that comprises.
(2) second transparent transmission determining units are used for after detection identifies the information of sending by the transparent transmission mode, and determining needs to adopt the transparent transmission mode to carry out transmission of Information;
Wherein, the described second transparent transmission determining unit can comprise:
First detects recognition unit, is used to receive the information that other equipment on the bearer path are sent, if the code/decode type of the information of sending is the transparent transmission mode, then determines to detect the information of sending by the transparent transmission mode that identifies; Perhaps,
Second detects recognition unit, be used to receive information that other equipment on the bearer path send or, form or content according to the information that receives determine that described information sends for adopting the transparent transmission mode, then determines to detect the information of sending by the transparent transmission mode that identifies.
In the embodiment of the invention,, realize that the system of transparent transmission specifically can comprise in the then corresponding hybrid network if adopt the ISLP mode as transparent transmission mode based on TDM:
At least one first network equipment is arranged in TDM network or the IP network, is used for adopting carrying out transmission of Information based on link protocol ISLP between system or IP-based transparent transmission mode;
At least one second network equipment, be connected between IP network and the TDM network, be used for the information that needs transparent transmission that described first network equipment or other second network equipments send, and the described information of receiving carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of ISLP, the information after the transmission conversion process.
In the embodiment of the invention, also provide the scheme that in IP network, realizes transparent transmission, in this implementation, at first set up bearer path between information transmitting terminal in IP network and the information receiving end; Afterwards, described bearer path via the network equipment (being media gateway and/or radio reception device) receive to need adopt transparent transmission mode information transmitted after, adopt IP-based transparent transmission mode to transmit the described information that receives.
Wherein, each network equipment is to carry out corresponding transparent transmission according to the transparent transmission indication information of receiving to handle, promptly before described network equipment reception needs to adopt transparent transmission mode information transmitted, the described network equipment also needs to obtain corresponding transparent transmission indication, so that determine that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information.
The network equipment obtain adopt the transparent transmission indication processing procedure can for: the network equipment receives the message that other network equipments (as IP-based BSC or MGW etc.) on the described bearer path send, and comprises the transparent transmission indication in the message; Perhaps, the message that network equipment receiving control apparatus (as MSC etc.) sends comprises the transparent transmission indication in the message; Perhaps, described media gateway and/or radio reception device receive pass through code/decode type that the bearer path transmission comes and be the information of transparent transmission mode after, determining needs to adopt the transparent transmission mode carry out transmission of Information.
In IP network, other network equipments send in the process of the message that comprises the transparent transmission indication, specifically can be by the RTCP message of expansion, perhaps Kuo Zhan RFC 2833 message, perhaps Kuo Zhan TrFO message, the described transparent transmission indication of carrying transmission so that recipient's network equipment of message can be known described transparent transmission indication, and is carried out corresponding transparent transmission pattern.
In IP network, control appliance send the message comprise the transparent transmission indication process can for: control appliance in the message that increases end points or revise the code/decode type that the transparent transmission mode is set in the message of end points and indicate as described transparent transmission, and send described message, carry out the function that transparent transmission is handled to realize the notice corresponding network device.
For ease of the implementation of realizing transparent transmission in IP network is had further understanding, describe below in conjunction with the specific embodiment of accompanying drawing to this scheme.
Specific embodiment one in the IP network
In pure IP network, as shown in figure 10, corresponding transparent transmission processing procedure may further comprise the steps:
Be specifically as follows by in the message of corresponding increase end points, UDTD being set, carry out transparent transmission with indication MGW1 and handle;
Described MSCe1 also confirms current having switched under the transparent transmission mode by the mode of carrying UDTD in the assignment message that sends to IP-based BSC to IP-based BSC;
In this step, also can after finish at the assignment of IP-based BSC operation, MSCe1, carry out transparent transmission with indication MGW1 and handle by UDTD being set corresponding increasing in the message;
Be specifically as follows expansion, to carry UDTD as the transparent transmission indication information by the sip message that transmits between MSCe1 and the MSCe2;
Step 4 after MSCe2 receives described notice, is then indicated MGW2 to carry out transparent transmission by the mode that UDTD is set in message such as increase end points and is handled;
In this step, MSCe2 can also adopt the transparent transmission mode to carry out message transmission by the BSC that is IP of assignment message announcement information receiving terminal;
Above-mentioned steps 3 and step 4 also can replace with: the IP-based BSC by opposite end office's (being information receiving end) shows that by the message such as page response that send to MSCe2 it adopts the transparent transmission mode to carry out transmission of Information, receive message such as described page response as MSCe2 after, then notify MGW2 to carry out transparent transmission and handle by the mode that UDTD is set in increasing message such as end points;
Step 5 adopts the EVRC code encoding/decoding mode to carry out the transmission of voice (unencryped word) between the IP-based BSC of the IP-based BSC of information transmitting terminal and information receiving end;
Step 6, the BSC that is IP of information transmitting terminal determines to switch to the state of encrypted word transmission, promptly carries out the switching of transparent transmission mode;
Step 7 adopts the UDTD code encoding/decoding mode to carry out the transmission of voice (encrypted word) between the IP-based BSC of the IP-based BSC of information transmitting terminal and information receiving end.
By above-mentioned processing procedure, can be implemented in the transparent transmission that realizes in the IP network at teleservice, thereby can satisfy user's professional transmission demand such as encrypted word transmission.
Specific embodiment two in the IP network
In IP network, be example to adopt the TrFO transmission means, shown in Figure 11 A and Figure 11 B, corresponding transparent transmission processing procedure may further comprise the steps:
Step 4, after MSCe1 received described update request, notice MGW1 carried out the renewal of code/decode type, carried out information transmission processing so that carry out the transparent transmission mode;
Being specifically as follows by in the message of revising end points code/decode type being set is UDTD, is the UDTD mode with the code/decode type that upgrades among the MGW1;
After the renewal of finishing the code/decode type of MGW1, can also be by carrying described UDTD and confirm to IP-based BSC that code/decode type upgrades and finish upgrading acknowledge message;
In this step, described modification message can send before sending the renewal acknowledge message, also can send after sending the renewal acknowledge message;
Step 5 adopts the UDTD mode to carry out voice transfer between IP-based BSC and the MGW1;
Step 6, MSCe1 also sends the current indication that needs to adopt the transparent transmission mode to MSCe2;
Specifically can need adopt the transparent transmission mode to carry out transmission of Information with instruct MS Ce2 by described UDTD is set in invitation message;
Step 7, after MSCe2 received described indication, by the expansion of message such as modification, MGW2 carried out the transparent transmission mode with carrying UDTD indication notice;
Described UDTD indication can send before MSCe1 returns acknowledge message at MSCe2, also can send after returning acknowledge message;
Step 8 adopts the UDTD mode to carry out voice transfer between MGW1 and MGW2;
Step 9, MSCe2 also notifies the IP-based BSC of opposite end office to carry out the transparent transmission mode;
Step 10 adopts the UDTD mode to carry out voice transfer between the IP-based BSC of MGW2 and opposite end office.
Need to prove that in above-mentioned processing procedure, step 5 can be carried out any time after step 4, step 8 can be carried out in any time after the execution in step 7.
Specific embodiment three in the IP network
In IP network, be example to adopt RTCP or RFC 2833 transmission meanss, as shown in figure 12, corresponding transparent transmission processing procedure may further comprise the steps:
Step 4, the MGW1 also RTCP by expansion or RFC 2833 message indications MGW2 need carry out the transparent transmission mode and carries out transmission of Information;
Step 5 adopts the UDTD mode to carry out the transmission of voice between MGW1 and MGW2;
Step 6, MGW2 will switch to the information notice MSCe2 under the transparent transmission mode, and need be carried out the transparent transmission mode and carried out transmission of Information by the RTCP or the IP-based BSC of RFC 2833 message informing opposite end offices of MSCe2 by expansion;
Step 7 adopts the UDTD mode to carry out the transmission of voice between the IP-based BSC of MGW2 and opposite end office.
Need to prove that in the above-mentioned processing procedure, described step 3 can be carried out in any time after the execution in step 2, described step 5 can be carried out in any time after the execution in step 4.
The embodiment of the invention also provides a kind of network equipment, is media gateway or radio reception device, and its concrete structure comprises following processing unit as shown in figure 13:
(1) information receiving unit is used for receiving needs and adopts transparent transmission mode information transmitted;
(2) transparent transmission processing unit is used for adopting IP-based transparent transmission mode to handle the described information that described information receiving unit receives;
(3) information transmitting unit is used to send the information after the described transparent transmission processing unit processes.
Alternatively, this network equipment can also comprise transparent transmission indication acquiring unit, be used to obtain the transparent transmission indication that other network equipments or control appliance are sent, determine that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information, and notify described transparent transmission processing unit.
Alternatively, this network equipment can also comprise the first transparent transmission mode notification unit, is used for the RTCP Real-time Transport Control Protocol RTCP message by expansion, perhaps Kuo Zhan Request for Comment RFC 2833 message, perhaps encoderless operation TrFO message is carried the described transparent transmission indication of transmission.
The embodiment of the invention also provides a kind of control appliance, and its concrete structure comprises following processing unit as shown in figure 13:
(1) transparent transmission mode determining unit is used for determining needs execution transparent transmission mode according to the message that the network equipment of receiving is sent;
(2) second transparent transmission mode notification units, be used for after the transparent transmission mode determines that needs are carried out the transparent transmission mode, in message transmitting procedure via the network equipment send notice, to indicate the described network equipment after reception needs to adopt transparent transmission mode information transmitted, adopt IP-based transparent transmission mode to transmit the described information that receives;
Wherein, the described second transparent transmission mode notification unit specifically can comprise:
In the message modification unit, the code/decode type that is used for being provided with in the message that increases end points or the message of revising end points the transparent transmission mode is indicated as described transparent transmission;
Message sending unit is used to send the amended message in described message modification unit.
In sum, the realization of the embodiment of the invention can (comprise simple IP network in IP-based network, and IP and TDM hybrid network) realize the transparent transmission of teleservice, promptly can switch to the transmission of carrying out business information under the transparent transmission mode, thereby the business information after can guaranteeing to encrypt can be by the IP network transparent transmission to receiving terminal, the reliability and the fail safe that have improved network.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (27)
1, realize the method for transparent transmission in a kind of hybrid network, it is characterized in that, comprising:
In the hybrid network that comprises IP network and time division multiplexing tdm network, the network equipment that is connected between IP network and the TDM network receives the information that needs transparent transmission;
The described information of receiving is carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information after the transmission conversion process.
2, method according to claim 1 is characterized in that, described method comprises that also the definite needs of the network equipment adopt the transparent transmission mode to transmit the step of the information of receiving, and this step comprises:
The network equipment receives the transparent transmission indication, determines that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information;
Perhaps,
After the network equipment detects and identifies the information of sending by the transparent transmission mode, determine that then this network equipment need adopt the transparent transmission mode to carry out transmission of Information;
Perhaps,
After the network equipment detects and identifies the information of sending by the transparent transmission mode, determine whether to allow to adopt the transparent transmission mode,, determine that then this network equipment need adopt the transparent transmission mode to carry out transmission of Information if control appliance allows to the control appliance request.
3, method according to claim 2 is characterized in that, the described network equipment receives and adopts the step of transparent transmission indication to comprise:
The network equipment that is connected between IP network and the TDM network receives the information that other equipment on the described bearer path send, and comprises the transparent transmission indication in the information; Perhaps,
Be connected in the information that the network equipment receiving control apparatus between IP network and the TDM network sends, comprise the transparent transmission indication in the information.
4, method according to claim 3 is characterized in that, the step that described control appliance sends the information that comprises the transparent transmission indication comprises:
Control appliance receives the indication that need switch to the transparent transmission mode, and then the described network equipment to its correspondence sends described information; Perhaps,
Control appliance is determined to allow to adopt the transparent transmission mode in setting up the bearer path process, and then the described network equipment to its correspondence sends described information.
5, method according to claim 3 is characterized in that,
The step that described control appliance sends the information that comprises the transparent transmission indication comprises:
The message that increases end points revise the message of end points or the message of encoderless operation TrFO in the transparent transmission mode is set code/decode type indicate as described transparent transmission, send described information;
The step that other equipment on the described bearer path send the information that comprises the transparent transmission indication comprises:
The described transparent transmission indication of carrying transmission in the message of the TFO of the RTCP Real-time Transport Control Protocol RTCP message of expansion or Request for Comment RFC 2833 standard message of expansion or expansion.
6, method according to claim 2 is characterized in that, the described network equipment detects the step that identifies the information of sending by the transparent transmission mode and comprises:
It is the information of transparent transmission mode that the network equipment receives code/decode type, perhaps, determines that according to the form or the content of the information that receives described information sends for adopting the transparent transmission mode, then determines to detect the information of sending by the transparent transmission mode that identifies.
According to each described method of claim 1 to 6, it is characterized in that 7, described transparent transmission mode based on TDM comprises: based on the transmission means of link protocol ISLP between system, perhaps, the transmission means of no tandem operation TFO.
8, a kind of network equipment is characterized in that, this network equipment is connected between IP network and the TDM network, and specifically comprises:
Information receiving unit is used to receive the information that needs transparent transmission;
Transparent transmission mode conversion processing unit, the information that is used for that described information receiving unit is received carry out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM;
Information transmitting unit is used to transmit the information by after the described transparent transmission mode conversion processing unit conversion process.
9, the network equipment according to claim 8 is characterized in that, also comprises:
The first transparent transmission determining unit is used to receive the transparent transmission indication, determines that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information; Perhaps,
The second transparent transmission determining unit is used for after detection identifies the information of sending by the transparent transmission mode, and determining needs to adopt the transparent transmission mode to carry out transmission of Information.
10, realize the system of transparent transmission in a kind of hybrid network, it is characterized in that this system is arranged in the hybrid network that comprises IP network and TDM network, and specifically comprises:
At least one first network equipment is arranged in TDM network or the IP network, is used to adopt the transparent transmission mode to carry out transmission of Information;
At least one second network equipment, be connected between IP network and the TDM network, be used for the information that needs transparent transmission that described first network equipment or other second network equipments send, and the described information of receiving carried out IP-based transparent transmission mode and based on the conversion process between the transparent transmission mode of TDM, the information after the transmission conversion process.
11, system according to claim 10 is characterized in that, described second network equipment also comprises:
The first transparent transmission determining unit is used to receive the transparent transmission indication, determines that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information; Perhaps,
The second transparent transmission determining unit is used for after detection identifies the information of sending by the transparent transmission mode, and determining needs to adopt the transparent transmission mode to carry out transmission of Information.
12, system according to claim 11 is characterized in that, other devices communicatings on the bearer path that described first transparent transmission determining unit and message transmission are used are used to receive the information that comprises the transparent transmission indication; Perhaps, the described first transparent transmission determining unit is communicated by letter with control appliance, is used to receive the information that comprises the transparent transmission indication.
13, system according to claim 12 is characterized in that, described control appliance comprises:
The transmission means determining unit is used to receive the indication that need switch to the transparent transmission mode; Perhaps, in setting up the bearer path process, determine whether to allow to adopt the transparent transmission mode;
Transparent transmission Indication message transmitting element, be used for after described transmission means determining unit receives described indication or determines to allow to adopt transparent mode, the code/decode type that the transparent transmission mode is set in the message of message that increases end points or modification end points is indicated as described transparent transmission, and sends the described message that comprises the transparent transmission indication.
14, system according to claim 11 is characterized in that, the described second transparent transmission determining unit comprises:
First detects recognition unit, is used for after receiving the information that code/decode type is the transparent transmission mode, determines to detect the information of sending by the transparent transmission mode that identifies; Perhaps,
Second detects recognition unit, is used for determining that in form or content according to the information that receives described information is after employing transparent transmission mode sends, to determine to detect the information of sending by the transparent transmission mode that identifies.
15, realize the method that transparent transmission detects in a kind of hybrid network, it is characterized in that, this hybrid network comprises IP network and TDM network, adopt in the TDM network and carry out transmission of Information based on the transmission means of ISLP as the transparent transmission mode, and the process that transparent transmission detects specifically comprises:
The network equipment that is connected between IP network and the TDM network receives the information that the TDM network is sent;
One group of continuous information frame that inspection receives if determine to comprise in this group of continuous information frame the 0x7E filling symbol of predetermined quantity, then confirms to detect the ISLP frame.
16, a kind of method that realizes transparent transmission in IP network is characterized in that, comprising:
In the IP bearer network, set up bearer path end to end;
Described bearer path via media gateway and/or radio reception device, receive to need adopt transparent transmission mode information transmitted after, adopt IP-based transparent transmission mode in the IP bearer network, to transmit the described information that receives.
17, method according to claim 16 is characterized in that, described method also comprises:
Described media gateway and/or radio reception device receive the transparent transmission indication, determine that according to described transparent transmission indication needs adopt the transparent transmission mode to carry out transmission of Information;
Perhaps,
Described media gateway and/or radio reception device receive pass through code/decode type that the bearer path transmission comes and be the information of transparent transmission mode after, determining needs to adopt the transparent transmission mode carry out transmission of Information.
18, method according to claim 17 is characterized in that, described media gateway and/or radio reception device receive and adopt the step of transparent transmission indication to comprise:
Receive the information that other media gateway on the described bearer path and/or radio reception device send, comprise the transparent transmission indication in the information; Perhaps,
The information that receiving control apparatus sends comprises the transparent transmission indication in the information.
19, method according to claim 18 is characterized in that, the step that described other media gateway and/or radio reception device send the message that comprises the transparent transmission indication comprises:
By the RTCP Real-time Transport Control Protocol RTCP message of expansion, perhaps Kuo Zhan Request for Comment RFC 2833 message are perhaps expanded encoderless operation TrFO message bearing and are transmitted described transparent transmission indication.
20, method according to claim 18 is characterized in that, the step that described control appliance sends the message that comprises the transparent transmission indication comprises:
The code/decode type that the transparent transmission mode is set in the message of message that increases end points or modification end points is indicated as described transparent transmission, and sends described message.
21, according to claim 18,19 or 20 described methods, it is characterized in that described method also comprises: transmission comprises the information of transparent transmission indication between control appliance.
22, a kind of network equipment for media gateway or radio reception device, is characterized in that, this network equipment comprises:
Information receiving unit is used for receiving needs and adopts transparent transmission mode information transmitted;
The transparent transmission processing unit is used for adopting IP-based transparent transmission mode to handle the described information that described information receiving unit receives;
Information transmitting unit is used to send the information after the described transparent transmission processing unit processes.
23, the network equipment according to claim 22 is characterized in that, also comprises:
Transparent transmission indication acquiring unit, be used to receive the transparent transmission indication that other network equipments or control appliance are sent, determine that according to described transparent transmission indication these network equipment needs adopt the transparent transmission mode to carry out transmission of Information, and notify described transparent transmission processing unit.
24, according to the claim 22 or the 23 described network equipments, it is characterized in that, also comprise the first transparent transmission mode notification unit, be used for RTCP Real-time Transport Control Protocol RTCP message by expansion, perhaps Kuo Zhan Request for Comment RFC 2833 message, perhaps encoderless operation TrFO message is carried the described transparent transmission indication of transmission.
25, according to the claim 22 or the 23 described network equipments, it is characterized in that described radio reception device comprises: base station controller or radio network controller.
26, a kind of control appliance is characterized in that, comprising:
Transparent transmission mode determining unit is used for determining needs execution transparent transmission mode according to the message that the network equipment of receiving is sent;
The second transparent transmission mode notification unit, be used for after the transparent transmission mode determines that needs are carried out the transparent transmission mode, in message transmitting procedure via the network equipment send notice, to indicate the described network equipment after reception needs to adopt transparent transmission mode information transmitted, adopt IP-based transparent transmission mode to transmit the described information that receives.
27, control appliance according to claim 26 is characterized in that, the described second transparent transmission mode notification unit comprises:
In the message modification unit, the code/decode type that is used for being provided with in the message that increases end points or the message of revising end points the transparent transmission mode is indicated as described transparent transmission;
Message sending unit is used to send the amended message in described message modification unit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075734A1 (en) * | 2008-12-30 | 2010-07-08 | 华为技术有限公司 | Method, device and system for transmitting signals |
| CN101478621B (en) * | 2009-01-24 | 2011-12-07 | 华为技术有限公司 | Encoding and decoding negotiation method for ciphered voice call, communication system and device |
| CN102281261A (en) * | 2010-06-10 | 2011-12-14 | 杭州华三通信技术有限公司 | Data transmission method, system and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264296C (en) * | 2003-07-08 | 2006-07-12 | 中兴通讯股份有限公司 | Transmission method for encrypting voice data in CDMA system |
| US7747017B2 (en) * | 2004-12-01 | 2010-06-29 | Motorola, Inc. | Method and apparatus for end-to-end clear transport protocol |
| CN100401811C (en) * | 2005-11-15 | 2008-07-09 | 华为技术有限公司 | Method for implement secondary coding-decoding operation service at cross-packet network and media gateway |
-
2007
- 2007-04-24 CN CN2007101027603A patent/CN101296205B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075734A1 (en) * | 2008-12-30 | 2010-07-08 | 华为技术有限公司 | Method, device and system for transmitting signals |
| US8331356B2 (en) | 2008-12-30 | 2012-12-11 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting a global text telephone signal |
| CN101478621B (en) * | 2009-01-24 | 2011-12-07 | 华为技术有限公司 | Encoding and decoding negotiation method for ciphered voice call, communication system and device |
| CN102281261A (en) * | 2010-06-10 | 2011-12-14 | 杭州华三通信技术有限公司 | Data transmission method, system and apparatus |
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|---|---|
| CN101296205B (en) | 2011-04-20 |
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